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Vishay General Semiconductor - Diodes Division P4KA30AHE3/73
- Part No.:
- P4KA30AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA30AHE3/73.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,208
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Product details
Overview
P4KA30AHE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, with 30 V nominal breakdown voltage (28.5–31.5 V), 400 W peak pulse power (10/1000 µs), 41.4 V max clamping voltage at 9.7 A, 1.5 W steady-state power dissipation, and AEC-Q101 qualification for engine control units and powertrain electronics.
For engineers reviewing the P4KA30AHE3/73 datasheet, P4KA30AHE3/73 pinout, P4KA30AHE3/73 application, or P4KA30AHE3/73 equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, junction temperature derating above 25 °C, unidirectional polarity requirement, and compliance with ISO 7637-2 pulse 1/2a/5a waveforms in 12 V automotive systems.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable high-temperature operation up to 185 °C junction temperature and low incremental surge resistance. It delivers consistent clamping performance under repetitive 10/1000 µs transients at 0.01 % duty cycle, with <1 ns response time and 0.097 %/°C temperature coefficient of VBR.
Designed for unidirectional DC line protection, it features matte tin-plated leads compliant with J-STD-002 and JESD22-B102, HE3 suffix indicating JESD201 Class 2 whisker resistance, and UL 94 V-0 molded epoxy case - all supporting automotive under-hood reliability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 28.5 V min / 31.5 V max at 1 mA - defines minimum trigger threshold before clamping begins |
| Clamping Voltage VC | 41.4 V max at 9.7 A IPPM - ensures protected circuitry sees ≤41.4 V during worst-case 10/1000 µs surge |
| Peak Pulse Power PPPM | 400 W (10/1000 µs) - sustains automotive load-dump and inductive-switching transients without failure |
| Steady-State Power PD | 1.5 W - supports continuous dissipation on infinite heatsink at lead temperature 75 °C |
| Junction Temperature Range | −65 °C to +185 °C - enables operation in under-hood environments exceeding 125 °C ambient |
| AEC-Q101 Qualified | Yes - validated for automotive powertrain, body control, and ADAS modules per stress test requirements |
| RoHS & WEEE Compliant | Yes - meets EU directives 2002/95/EC and 2002/96/EC with no exemptions required |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, molded epoxy case with cathode band marking; UL 94 V-0 rated; 0.375" (9.5 mm) minimum lead length; 0.107" (2.7 mm) maximum body diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to system ground or low-side reference | Provides low VF (3.5 V @ 25 A) path during surge conduction to shunt energy away from protected IC |
| Cathode | Current exit point in forward bias; marked by color band; connected to protected line | Defines unidirectional clamping direction - suppresses positive transients only on cathode-connected rail |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low dynamic impedance across −65 °C to +185 °C, critical for engine bay ECU protection |
| 400 W peak pulse rating (10/1000 µs) | Withstands ISO 7637-2 Pulse 5a (load dump) surges up to 400 W without degradation or parametric shift |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, preserving margin below IC absolute maximum ratings |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling, ensuring long-term reliability in automotive solder joints |
| Matte tin plating, J-STD-002 compliant | Guarantees robust wetting and intermetallic formation during reflow or wave soldering at 260 °C for 40 s |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) LIN Bus Line Protection |
|---|---|
Use Scenario: Protects 5 V or 12 V microcontroller power rails from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple during vehicle cranking. IC Role / Device Role: Unidirectional TVS placed between battery feed and LDO input, clamping surges before they reach sensitive regulators. Use Value: Limits voltage to ≤41.4 V during 9.7 A surge, maintaining >2 V margin below typical 45 V automotive LDO absolute max rating. | Use Scenario: Shields LIN transceiver I/O pins from ESD events (IEC 61000-4-2 ±8 kV contact) and board-level coupling noise in door modules. IC Role / Device Role: Cathode tied to LIN bus line, anode to ground; clamps positive transients while allowing normal 12 V dominant state signaling. Use Value: Sub-1 ns response ensures clamping initiates before LIN transceiver internal protection fails, preserving signal integrity. |
| ADAS Camera Power Supply Protection | Electric Power Steering (EPS) Motor Driver Gate Drive Protection |
Use Scenario: Safeguards 3.3 V image sensor and ISP power domains against coupled transients from nearby high-current actuators in front-end camera modules. IC Role / Device Role: Secondary TVS stage downstream of primary filter, placed directly at sensor supply pin. Use Value: 185 °C max junction temperature allows placement near heat-generating image processors without derating loss. | Use Scenario: Protects high-side/low-side gate drivers from inductive kickback when steering motor current is interrupted. IC Role / Device Role: Mounted across driver output and ground to clamp flyback voltage spikes before MOSFET gate oxide breakdown. Use Value: 400 W pulse rating absorbs energy from motor inductance without thermal runaway, enabling compact PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same VBR range (28.5–31.5 V), same DO-214AC package but surface-mount; lower PPPM (400 W same), higher VC (48.4 V) | Requires SMT assembly; less suitable for through-hole chassis-mounted power inputs | Select for space-constrained PCBs where reflow compatibility and automated assembly are prioritized over mechanical robustness. |
| 1.5KE30A | Same VBR/VC specs, DO-201AD package; higher PD (5 W), but not AEC-Q101 qualified | Lacks automotive qualification; limited to industrial/commercial environments with <125 °C ambient | Choose for cost-sensitive non-automotive designs where extended temperature operation is not required. |
Compared with SMAJ30A and 1.5KE30A, P4KA30AHE3/73 uniquely combines AEC-Q101 qualification, DO-41 axial leads for high-vibration mounting, and optimized clamping (41.4 V) - making it the preferred choice for production automotive power rail protection where reliability and mechanical stability are mandatory.
Availability
P4KA30AHE3/73 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering electronics requiring stable component supply across automotive production lifecycles.
Supply support for P4KA30AHE3/73 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The P4KA30AHE3/73 belongs to Vishay's automotive TVS diode family designed specifically for ISO 7637-2 and ISO 16750-2 compliant protection in 12 V and 24 V vehicle electrical systems, targeting under-hood and safety-critical ECUs.
FAQ
What is the clamping voltage of the P4KA30AHE3/73 at its rated peak pulse current?
The P4KA30AHE3/73 has a maximum clamping voltage (VC) of 41.4 V at its rated peak pulse current (IPPM) of 9.7 A, measured using the standard 10/1000 µs waveform. This value ensures that protected circuits experience no more than 41.4 V during worst-case surge events, providing critical margin below typical 45 V absolute maximum ratings of automotive power management ICs. The P4KA30AHE3/73 maintains this clamping performance across its full operating temperature range.
Is the P4KA30AHE3/73 suitable for bidirectional transient suppression?
No, the P4KA30AHE3/73 is a unidirectional TVS diode only, as confirmed by Vishay documentation stating "Available in uni-directional polarity only." It protects against positive transients on the cathode-connected line relative to ground. For bidirectional protection - such as AC lines or data buses subject to both polarities - a separate bidirectional device like the P4SMA30CA must be selected. The P4KA30AHE3/73 polarity is marked by a cathode band on the DO-41 package body.
Does the P4KA30AHE3/73 meet AEC-Q101 requirements for automotive use?
Yes, the P4KA30AHE3/73 is explicitly AEC-Q101 qualified, as noted in the "MECHANICAL DATA" section of Vishay document 88364: "Base P/NHE3 - RoHS compliant, high reliability/automotive grade (AEC Q101 qualified)." This qualification covers stress tests including HTSL, TCT, UHAST, and ESD, validating suitability for automotive powertrain, chassis, and ADAS applications where long-term reliability under thermal and vibration stress is mandatory. The P4KA30AHE3/73 carries the HE3 suffix denoting this automotive-grade status.
What is the maximum operating junction temperature for the P4KA30AHE3/73?
The P4KA30AHE3/73 has a maximum operating junction temperature (TJ) of +185 °C, as specified in the "PRIMARY CHARACTERISTICS" table and confirmed in the "MAXIMUM RATINGS" section. This rating enables reliable operation in high-temperature under-hood environments, such as near engine blocks or exhaust manifolds, where ambient temperatures exceed 125 °C. Derating curves in Figure 2 show how peak pulse power decreases linearly above 25 °C ambient, and the P4KA30AHE3/73 retains functional capability up to its 185 °C limit.
How does the P4KA30AHE3/73 differ from the standard P4KA30 variant?
The P4KA30AHE3/73 differs from the base P4KA30 in three key ways: (1) tighter breakdown voltage tolerance (28.5–31.5 V vs. 27.0–33.0 V), (2) inclusion of the HE3 suffix indicating AEC-Q101 qualification and JESD201 Class 2 whisker resistance, and (3) RoHS-compliant matte tin plating per J-STD-002. These enhancements make the P4KA30AHE3/73 suitable for high-reliability automotive applications, whereas the P4KA30 is intended for commercial/industrial use. Both share identical DO-41 packaging and 400 W pulse rating.
P4KA30AHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- PAR®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KA30AHE3/73 FAQ
1.How can I place an order for P4KA30AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA30AHE3/73 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P4KA30AHE3/73 reliable?
The price and inventory of P4KA30AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA30AHE3/73 is usually 5 days.
3.What payment methods are accepted for P4KA30AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA30AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA30AHE3/73?
P4KA30AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA30AHE3/73 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P4KA30AHE3/73?
For technical support, including P4KA30AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA30AHE3/73 requirements.
6.How does Aetrix verify that P4KA30AHE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KA30AHE3/73 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P4KA30AHE3/73 meets industry standards.
7.What is the process for return or replacement of P4KA30AHE3/73?
All P4KA30AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA30AHE3/73, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P4KA30AHE3/73 part is unused and in its original packaging.
Return procedure for P4KA30AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KA30AHE3/73 Tags
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